| Abstract |
| CoTi and ZrO₂ nanopowders were mechanochemically synthesized from CoTiO3 and Zr powders according to the reaction (2CoTiO3 + 3Zr → 2CoTi + 3ZrO₂). The milled powders were then consolidated by pulsed current-activated sintering within two minutes under an applied pressure of 80MPa. The average hardness and fracture toughness of the nanostructured 2CoTi-3ZrO₂ composite sintered from high energy ball milled powder were 940 kg/mm² and 6 MPaㆍm1/2, respectively. The mechanical properties of the composite were higher than those of monolithic CoTi or ZrO₂, respectively. The microstructure and phases of the composite were investigated using FE-SEM and XRD. (Received May 4, 2016; Accepted May 23, 2016) |
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| Key Words |
| sintering, composite materials, nanomaterials, mechanical properties, synthesis |
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